JP2991999B2 - Washing water pumping device for washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine, and more particularly, to a washing water pumping device for a washing machine capable of smoothly circulating washing water regardless of a water supply level.

[0002]

2. Description of the Related Art FIG. 1a is a perspective view of a general washing machine, FIG. 1b is a structural view of a general washing machine, and FIG. 2 is a perspective view showing a conventional pumping guide member of the washing machine. .
Hereinafter, a conventional washing water pumping device of a washing machine will be described with reference to FIGS.

In a conventional washing machine, an outer tub 11 is supported in a main body 9 as shown in FIGS. 1a, 1b and 2, and the washing tub 1 is rotatable in the outer tub 1. A pumping guide member 2a is provided on an outer peripheral surface of the washing tub 1 for injecting washing water and discharging the washing water into the washing tub 1 again. On the upper part of the pumping guide member 2a, a thread collecting net for catching foreign substances (fluff, thread removal, etc.) contained in the washing water which flows along the pumping guide member 2a and is discharged into the washing tub 1 again. 10 are provided. Further, a pulsator 7 is rotatably provided at the center of the lower part in the washing tub 1.
The driving force of the motor 12 is transmitted via a V-belt 14 wound between the motor pulley 13 and the clutch pulley 15 to the center of the bottom surface of the washing tub 1 and the pulsator 7.
A clutch 16 is mounted so as to selectively rotate the water, and a water supply valve 18 for supplying washing water necessary for washing to one side of an upper portion of the main body 9 based on a user's selection.
Is provided. A drain hose 20 provided with a drain valve 19 for draining washing water used for washing and rinsing to the outside of the main body 9 is connected to a lower portion of the outer tub 11.

Accordingly, after a user puts laundry into the washing tub 1 with the door 21 provided on the upper part of the main body 9 opened, the user closes the door 21 and then performs washing on the control panel. When the start button is selected, the washing, rinsing, and spin-drying steps are automatically performed within a predetermined time according to the control signal of the controller.

First, in a washing process, a water supply valve 18 provided on a water supply pipe 17 is opened, and washing water used for washing is supplied through the water supply pipe 17, and the supplied washing water is straightened. It flows into the tank 1 and is filled to a certain height. Then, the washing water used in the washing is applied to the washing tub 1.
When the water is filled to a certain height, the water supply valve 18 is closed and further water supply is stopped, and the motor 12 fixed to one side of the outer bottom surface of the outer tub 11 is continuously and repeatedly driven in the forward and reverse directions. I will be. When the motor 12 is driven in the forward and reverse directions in this manner, the driving force is transmitted to the clutch 16 attached to the center of the outer bottom surface of the outer tub 11 via the belt. The motor 1 operates by receiving a washing signal from the controller.
2 is transmitted only to the pulsator 7 in a decelerated state for a certain period of time. Accordingly, when the pulsator 7 rotates and rotates the laundry in the washing tub 1 and generates a water flow, the laundry is pulsated by the pulsator 7.
The laundry is washed by the impact of water, the flow of water, the frictional action with the washing tub 1 and the softening action of the detergent.

That is, when the laundry and the detergent are put into the washing tub 1 and the water is supplied to a set water level, the motor 1 attached to one side of the bottom of the outer tub 11 is washed.
2 drives to generate the necessary rotational force during washing,
Thereby, the power is sequentially supplied to the motor pulley 13 and the V belt 1
4. The rotation speed is reduced through the clutch 16 via the clutch pulley 15, and the pulsator 7 is rotated. At the same time, the washing water sucked through the suction port 3 below the pumping guide member 2a coupled to one side wall in the washing tub 1 due to the rotational centrifugal force of the pulsator 7 is combined with the pumping guide member 2a. It rises along the flow path formed between the washing tub 1 and is discharged to the washing tub 1 again through the thread collecting net 10 provided at the discharge port 4 on the pumping guide member 2a.

At this time, the thread removal collecting net 10 filters foreign substances such as fluff and thread removed during the washing, thereby preventing a phenomenon that the foreign substances and thread removal contaminate the laundry with respect to the laundry. On the other hand, it acts to improve the washing power of the detergent.

On the other hand, after the washing process is completed, drainage is performed while the rotation of the washing tub 1 and the pulsator 7 is stopped.
The washing tub 1 and the pulsator 7 are simultaneously rotated at a high speed to perform a spin-drying process for spin-drying the laundry. afterwards,
After repeating the above series of steps a plurality of times, the washing is completed by completing the last dehydration step.

However, this type of conventional washing machine has a problem that the washing water is not smoothly circulated at a low water level due to the height of the thread collecting net 10.

That is, the height at which the water sucked through the suction port 3 of the pumping guide member 2a is pushed up depends on the rotation speed (RPM) of the pulsator 7, the structure of the pumping guide member 2a, and the driving time of the pulsator 7. It depends on various factors such as the water level of the washing water. At this time, there is no problem at a high water level, but at a low water level, there is a problem that the sucked water usually turns around inside the flow path and does not reach the discharge port 4. In other words, at low water levels,
The water sucked into the suction port 3 of the pumping guide member 2a is
It does not flow into the washing tub 1 again through the thread collecting net 10 and turns only inside the flow path. For this reason, conventionally, a series of circulations in which the washing water is sucked into the suction port 3 of the pumping guide member 2a and then discharged again through the discharge port 4 is not performed smoothly at a low water level. The activation of the detergent is weaker than in the case where the washing power is reduced. In addition, many foreign substances such as thread removal are attached to the laundry while floating and remain on the laundry even after dehydration. there were.

[0011]

SUMMARY OF THE INVENTION The present invention has been made to solve all the above-mentioned problems, and the pumping is performed via a pumping guide member regardless of the level of water supplied to the washing machine. It is an object of the present invention to improve washing and rinsing performance by activating detergent dissolution so that water can be circulated smoothly, and to collect foreign substances more effectively.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a pumping guide member formed at an arbitrary point between a suction port for sucking and discharging washing water and a first discharge port. A washing water pumping device for a washing machine, further comprising a second outlet for introducing washing water into the washing tub regardless of the water level.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

FIG. 3 is a perspective view showing a pumping guide member of the present invention, and FIG. 4 is a rear view showing a main part of FIG.
FIG. 5 is a cross-sectional view taken along line II of FIG.

The present invention is provided at a lower portion and an upper portion of a pumping guide member 2 provided on one side wall of a washing tub 1 of a washing machine for pumping washing water, and for sucking and discharging washing water. At an arbitrary point between the mouth 3 and the first outlet 4, a second outlet 5 for adding washing water to the inside of the washing tub 1 regardless of the water level is additionally formed.

At the second discharge port 5, the water sucked into the suction port 3 is provided inside the pumping guide member 2 for the first and the second.
A "F" shaped guide plate 6 (baffle) having a horizontal portion 6a and a vertical portion 6b for dividing and supplying to the second discharge port is integrally formed as shown in FIG.

Hereinafter, the operation of the embodiment of the present invention configured as described above will be described in detail with reference to FIGS.

A suction port 3 formed at a lower portion of a pumping guide member 2 provided on one side wall of a washing tub 1 of the washing machine and a first discharge port 4 formed at an upper portion of the pumping guide member 2.
A second discharge port 5 is further formed at an arbitrary point between
A “F” -shaped guide plate 6 having a horizontal portion 6 a and a vertical portion 6 b is integrally formed inside the pumping guide member 2 at the second discharge port 5.

When washing and rinsing the laundry in such a state, when the washing water is sucked into the suction port 3 by the rotation of the pulsator 7, the sucked washing water is transferred to the pumping guide member 2 and the washing tub. After rising through the flow path between the first discharge port and the second discharge port, the guide plate 6 is formed integrally with the inside of the pumping guide member 2 at the second discharge port.
Divided into crotch. Then, a part of the washing water whose rising is blocked by the "F" -shaped guide plate 6 is re-flowed into the washing tub 1 through the second discharge port 5 of the pumping guide member 2, and the "F" is formed. The remaining washing water not interrupted by the guide plate 6 rises along the flow path and flows back into the washing tub 1 through the first discharge port 4 on the pumping guide member 2. Therefore, even if the water level of the supply water is low, the water hitting the “F” -shaped guide plate 6 is introduced into the washing tub 1, so that the detergent that remains without being dissolved by the smooth circulation of the washing water is removed. As well as increasing the solubility, the flowability of the laundry can be increased. Therefore, the performance of the washing and rinsing steps of the laundry can be improved while the amount of the detergent used is reduced to the maximum. Further, since foreign substances such as thread removal or fluff can be collected more efficiently, it is possible to prevent a phenomenon in which foreign substances are attached to the laundry after washing.

On the other hand, FIG. 6 shows another embodiment of the sectional view taken along the line II of FIG. 4, in which water formed inside the pumping guide member 2 and rising along the pumping guide member 2 is firstly removed. The guide plate 8 which is divided and supplied to the second discharge ports 4 and 5 is formed in a streamlined manner so as to increase the speed and momentum of the rising fluid so that the flow amount of the fluid at the time of washing is increased. It was done.

FIG. 7 is a rear perspective view showing another embodiment of the pumping guide member of FIG. 3, and FIG. 8 is a sectional view taken along the line II-II of FIG.

According to another embodiment of the present invention, the guide rib 101 is provided in the flow path of the pumping guide member 2 so that the flow path width at the portion between the suction port 3 and the second discharge port 5 becomes narrow in a certain section. The washing water is provided by the guide ribs 101. Here, the guide rib 101 is disposed near the lower portion of the second discharge port 5, the guide rib 101 is provided on each of both side surfaces in the flow path, and the guide rib 101 is disposed along the flow path. In order to control the speed (V) of the washing water to be guided, the washing water is formed so as to be rounded into a curved shape, or formed into a plate bent at three portions (first, second and third points). I have.

The plate-shaped guide rib 101 bent at the three portions has a first region (a) whose lower side is widened up to the first point and becomes narrower toward the upper side, and the first region (a). A second area (b) that maintains a constant gap from the upper end of the point to the second point, and a third area (c) that is wider at the upper end of the second point toward the upper side. ing. The width (h) of the guide rib 101 is wider than the width (h ₁ ) of the guide plates 6 and 8 so that the entire washing water is smoothly guided along the flow path of the pumping guide member. I have.

Hereinafter, the operation of the embodiment of the present invention thus configured will be described with reference to FIGS.

First, the washing water in the washing tub 1 flows through the suction port 3 of the pumping guide member 2 by the pulsator 7 provided on the inner bottom surface of the washing tub 1 and rotating left and right. It is guided along the flow path formed between the guide member 2 and the washing tub 1 and rises to the upper part of the washing tub. At this time, the washing water rising along the flow path passes through the first area (a), which is a section where the cross-sectional area of the flow path is narrowed by the pumping guide member 2,
The flow velocity (V) increases. That is, while the amount of the washing water passing through the flow path formed by the pumping guide member 2 is constant, the cross-sectional area of the flow path in the first area (a) is small, so that the flow rate of the washing water is low. Is to increase.

On the other hand, the washing water whose speed gradually increases as it is guided along the flow path of the first area (a) in which the flow path therebetween gradually narrows as it goes upward, The fluid flows at the highest speed in the flow path (b). Thereafter, in the third area (c) where the gap between the guide ribs 101 is gradually widened, the speed of the washing water gradually decreases. The washing water whose speed (V) has increased while passing through the first area (a) and the second area (b) of the guide rib 101 passes through the guide rib 101 and then passes through the second discharge port 5 of the pumping guide member 2. Section 6a and vertical section 6b formed in the flow path immediately above
The guide plate 6 is formed into two branches and flows by the guide plate 8 formed of a streamline type.

At this time, a part of the washing water whose rise has been blocked by the guide plates 6 and 8 is discharged into the washing tub 1 through the second discharge port 5 and flows again. Since the guide ribs 101 are formed in a curved shape, the washing water discharged through the second discharge port 5 has an angular distribution at the time of discharge.
ibution). Accordingly, the discharged washing water hits the laundry over a wide area in the washing tub and activates the detergent remaining on the laundry, thereby improving the washing power.

On the other hand, the remaining washing water that has passed through the flow path without being blocked by the guide plates 6 and 8 rises along the flow path and then continues to the first discharge port formed on the upper part of the pumping guide member 2. 4 and is discharged into the washing tub 1. At this time, the foreign substances contained in the washing water discharged through the first discharge port 4 are filtered by the filtration net while passing through the thread collecting net 10 connected to the first discharge port 4, so that the washing water is washed. The washing water re-flowed into the tub 1 does not contain any foreign substances such as thread removal. The washing water discharged through the first discharge port 4 also hits the laundry in the washing tub 1 and activates the detergent attached to the laundry, thereby improving the washing performance of the laundry. Needless to say.

On the other hand, in the above, the width (h) of the guide rib 101 is formed wider than the width (h ₁ ) of the guide plates 6 and 8, so that the back surface of the pumping guide member 2 and the washing tub 1
The entire washing water is smoothly guided along the flow path formed between the washing water.

[0030]

As described above, in the case of the above embodiment, the width of the flow path in the portion between the suction port 3 and the second discharge port 5 in the flow path of the pumping guide member 2 is constant. The guide ribs 101 are formed on both sides of the flow path so as to be narrower, so that the speed of the washing water flowing through the flow path of the pumping guide member 2 can be increased. For this reason, when the speed of the washing water discharged through the second discharge port 5 of the pumping guide member 2 increases, the flow amount of the washing water in the progress of the washing also increases, and the laundry in the washing tub 1 is attached. Since the detergent is effectively activated, the washing performance is improved.

[Brief description of the drawings]

FIG. 1a is a perspective view of a general washing machine.

FIG. 1b is a sectional view of a general washing machine.

FIG. 2 is a perspective view showing a conventional pumping guide member of the washing machine.

FIG. 3 is a perspective view showing a pumping guide member of the present invention.

FIG. 4 is a rear view showing a main part of FIG. 3;

FIG. 5 is a sectional view taken along line II of FIG. 4;

FIG. 6 is another embodiment of the sectional view taken along the line II of FIG. 4;

FIG. 7 is a rear perspective view showing another embodiment of the pumping guide member of FIG. 3;

8 is a sectional view taken along line II-II of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing tub 2 Pumping guide member 3 Suction port 4 1st discharge port 5 2nd discharge port 6 Guide plate 6a Horizontal part 6b Vertical part 101 Guide rib

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-299284 (JP, A) JP-A-8-266786 (JP, A) Jikai Sho 61-197976 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) D06F 39/08 D06F 17/04

Claims (6)

(57) [Claims] The washing water is supplied to an inside of a washing tub at an arbitrary point between a suction port formed on a pumping guide member for sucking and discharging the washing water and a first discharge port regardless of the water level. A second discharge port is further formed for charging the liquid into the pumping guide member at the second discharge port.
The water sucked into the suction port is divided into first and second
A guide plate for supplying the fluid, and a portion between the suction port and the second discharge port in the pumping guide member.
Is formed so that the width of the channel becomes narrower in certain sections of the channel.
The constant section in which the width of the flow path is narrowed corresponds to the second discharge port.
A washing water pumping device for a washing machine, which is located at a lower part of the washing machine. Wherein the guide ribs on the flow path provided a washing machine of the washing water pumping apparatus according to claim 1, wherein the flow path width, characterized in that the narrowing certain sections by the guide ribs. 3. The washing water pumping device of a washing machine according to claim 2, wherein the guide rib is formed so as to be bent at three or more portions, so that a flow path width is reduced. 4. The washing water pumping device for a washing machine according to claim 3 , wherein the guide rib includes an area of a certain section in which a flow path cross-sectional area becomes narrower from a lower side to an upper side. . 5. The washing machine according to claim 4 , wherein a region in which the cross-sectional area of the flow path is wider than that of the region is formed above the region of the guide rib where the flow path cross-sectional area is narrow. Washing water pumping equipment. 6. wash water pumping device of a washing machine according to claim 1, characterized in that the guide rib width (h) is wider than the width of the discharge port of the guide plate (h _1).